Yamaha 2002 TDM900 Service Manual page 429

EAS00781
TROUBLESHOOTING
Any of the following fail to light: headlight,
high beam indicator light, taillight, auxilia-
ry light or meter light.
Check:
1. main, parking light, and headlight fuses
2. battery
3. main switch
4. light switch
5. dimmer switch
6. pass switch
7. wiring connections
(of the entire lighting system)
NOTE:
S Before troubleshooting, remove the following
part(s):
1. fuel tank
2. front cowling
3. rear cowling
S Troubleshoot with the following special
tool(s).
Pocket tester
90890-03132
EAS00738
1. Main, parking lighting and headlight fuses
S Check the main, parking lighting and head-
light fuses for continuity.
Refer to "CHECKING THE FUSES" in chap-
ter 3.
S Are the main, parking lighting and headlight
fuses OK?
YES NO
Replace the fuse(s).
8-29
LIGHTING SYSTEM
EAS00739
2. Battery
S Check the condition of the battery.
Refer to "CHECKING AND CHARGING
THE BATTERY" in chapter 3.
Minimum open-circuit voltage
12.8 V or more at 20_C
S Is the battery OK?
YES
EAS00749
3. Main switch
S Check the main switch for continuity.
Refer to "CHECKING THE SWITCHES".
S Is the main switch OK?
YES
EAS00783
4. Light switch
S Check the light switch for continuity.
Refer to "CHECKING THE SWITCHES".
S Is the light switch OK?
YES
ELEC
NO
S Clean the battery
terminals.
S Recharge or re-
place the battery.
NO
Replace the main
switch.
NO
The light switch is
faulty. Replace the
right handlebar
switch.